The first stop, at 4:17 p.m. near the corner of South Canal and Jackson streets, resulted in the arrest of 31-year-old Justin Hannigan, 3 Depot St., Southwick.

Hannigan was charged with possession of Class A and B drugs. Class A drugs include heroin and other opiates, while Class B drugs include cocaine, methadone and other substances.

The second stop happened a little more than an hour later near 563 South Canal St., where 31-year-old Joshua Goodrow, 36 Vienna Ave., Ludlow, was arrested on a warrant and charged with possession of a Class A drug.

The men were expected to be arraigned in Holyoke District Court. Additional information was not immediately available.

Police have been targeting South Holyoke and the neighboring Flats section of the city due to ongoing drug activity in the area.